87475039 has 2 divisors, whose sum is σ = 87475040. Its totient is φ = 87475038.

The previous prime is 87475033. The next prime is 87475043. The reversal of 87475039 is 93057478.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87475039 - 2¹¹ = 87472991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87474986 and 87475004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87475033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43737519 + 43737520.

It is an arithmetic number, because the mean of its divisors is an integer number (43737520).

Almost surely, 2^87475039 is an apocalyptic number.

87475039 is a deficient number, since it is larger than the sum of its proper divisors (1).

87475039 is an equidigital number, since it uses as much as digits as its factorization.

87475039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 87475039 is about 9352.8091501965. The cubic root of 87475039 is about 443.9097816721.

The spelling of 87475039 in words is "eighty-seven million, four hundred seventy-five thousand, thirty-nine".